<!DOCTYPE html>
<html lang="en">
<head>
  <title>Test::Divs inside divs</title>
  <meta charset="UTF-8">
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
</head>
<body>
<h1>Some divs</h1>
<div id="parent_div">
  Big papa
  <div id="child_div1">Son</div>
  <div id="child_div2">Daughter  <div id="grandchild_div">Granddaughter <div id="theHiddenElement" style="display: none">Видишь суслика? И я не вижу. <b>А он есть</b>!</div>
  </div>
  </div>
</div>

<h5 id="upper-case">THIS IS SPARTA!</h5>
<span id="error"><!--Empty text--></span>

</body>
</html>
